Electric-arc lamp for alternating currents.



No. 885,400; PATENTED APR. 21, 1908.

G. SZUK & w. HAGKL.

ELECTRIC ARC LAMP FOR ALTERNATING CURRENTS.

APPLICATION rum) 1'21 24, 1904. nnnwnn ran. is, 1906. I

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No. 885,400. PATENTED APR. 21, 1908.

Witnesses.

G. SZUK' & w. HAGKL. ELECTRIC ARC LAMP FOR ALTBRNATING GURRENTS.

APPLICATION FILED IEB. 24, 1904. RENEWED FEB. 15, 190 8.

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GIFJZA SZUK AND WENZEL llAOKL, OF BUDAPEST, AUSTRIA-HUNGARY.

ELECTRIC-ARC LAMP FOR ALTERNATING GURRENTS.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed February 24, 1904, Serial No. 195,053. Renewed February 15, 1906. Serial No. 301,271.

T 0 all whom it may concern:

Be it known that we, Gaza SZUK and WENZEL I-IAoKL, both subjects of the Em peror of Austria-Hungary, and residents of Budapest, in the Empire of Austria-Hungary, have invented certain new and useful improvements in Electric-Arc Lamps for Alternating Currents, oi which the following is a specification.

The present invention relates to electric arc lamps and more particularly to such class of electric arc lamps destined for alternating currents in which a magnet-coil is used for controlling the separation and feed of the carbons by means of an armature formed by a ring movable in the field of force 01' said magnet coil and connected with a clutch mechanism acting upon the upper carbon.

Our invention is illustrated by the accompanying drawings, wherein like letters of reference indicate corresponding parts throughout the several figures and in which:

Figure 1 shows a series lamp in vertical central section, in which the upper part is shown in elevation. Fig. 2 is the accompanying side view of the regulating mechanism. Fig. 3 is a plan view. Fig. 4 cross section, above the carbon terminal, on line a b of Fig. 1. Fig. 5 shunt circuit lamp in vertical section. Fig. 6 corresponding front view of the regulator mechanism. Fig. 7 cross section on the line c-d of Fig. 5.

Referring to the drawings, the main body of the lamp consists of a tubular case 1.2 and the whole regulating mechanism is arranged. in such manner that it surrounds said tubular case 12 and that the whole length of the tube 13 arranged in said case 12 and guiding the upper carbon may be utilized to receive said carbon. The core 2 extends beyond the bob bin 1 and is made hollow, so that it may be arranged upon the case 12. A ring 5 is hinged to support 4- on the bobbin 1 and incloses the end of the core 2. The ring 5 is made of a material which is a good conductor but cannot be magnetized, as for instance aluminium. The iron core 2 carries an iron yoke 3 which forms together with the iron core closed magnetic circuits.

The counterbalancing weight 8 is connected to one end of an annular lever 7 surrounding the case 12 and being pivoted to with asecond projection of the ring 5 pre vents in well known manner too rapid mothe lower end of rod 11 may be connectedwith a disk 14., Fig. 6, hinged at 15 to the cylindrical prolongation 1.6 of the base plate 17 of the lamp and supporting a removable clutch-plate 18 made of non-conducting ma terial and receiving the upper carbon 1.9. 20 is a stirrup holding the negative carbon.

The operation of the lamp is as follows: When the lamp is cut out the points of the carbons are in contact and the armature 5 is in its lowermost position. On the lamp being cut in, the bobbin 1 begins to act and elifects a smooth raising of the armature 5 ar ranged above the bobbin, so that by means of the rod 11 and the clutch connected therewith the upper carbon is raised and the arc will be formed. As the carbons gradually burn away, the arc will increase and, by reason of the diminished strength of the current, the inductive repulsion will be diminished, so that the armature 5 descends and the points of the carbons approach.

In the shunt lamp shown in Figs. 5, 6 and 7 the armature 5 is arranged on the underside of the bobbin 1 and is held in its uppermost position by means of the counterbalancingweight 8 so that the points of the carbons are separated from each other. On the lamp being cut in, the current flows through the bobbin and accordingly the ring or armature 5 is smoothly repulsed downward, so that the upper carbon falls upon the lower one. In this moment the main current is closed, by reason of which the strength of current in the bobbin diminishes, so that the ring 5 is raised'and, by means of rod 11 and clutch plate-18 raises the upper carbon and accordingly the electric arc is formed. As the points of the carbons gradually burn away and the electric arc increases, the strength of current and voltage in the bobbin will become greater and the ring 5 descends again,

so that the points of the carbons approach. In this manner the arc of the lamp is always regulated. The lamp can also be constructed as differential lamp.

Having now described our invention, What we claim and desire to secure by Letters Patent of the United States is In electric arc lamps for alternating currents the combination of a tubular main body receiving in its Whole inner length the upper carbon and supporting an electromagnet-coil With iron core and ring armature movable upon said core and hinged to the coil, an arm supported by said ring and extending through an opening in the tubular main body, a rod lin ed to said arm and extending through the space between the tubular main body and the upper carbon, a clutch connected to said rod and acting upon the u per carbon, substantially as described, anc for the purpose set forth.

In Witness whereof We have hereunto set our hands in presence of twp Witnesses. GEZA SZUK. WENZEL HACKL. Vitnesses:

BRUNN ALFIRD, REBMEN ANDRAs. 

